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One-piece magnetic core structure, manufacturing method thereof, and magnetic core assembly

A production method and an integrated technology, applied in the direction of magnetic core/yoke, inductor/transformer/magnet manufacturing, electrical components, etc., can solve the problems of low production efficiency, poor adhesion performance stability, and affecting the magnetic stability of magnetic structures And other problems, to achieve the effect of improving production efficiency, high magnetic permeability, and strong stability

Active Publication Date: 2017-08-15
SANQIAOHUI (FOSHAN) NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional magnetic core structure has many parts (including one soft magnet and two hard magnets), cumbersome assembly and low production efficiency
At the same time, due to the presence of glue between the soft and hard magnets, the adhesive performance of the glue becomes less stable at low or high temperatures, which greatly reduces the reliability of the magnetic core structure. The traditional magnetic core structure is not suitable for low or high temperatures. working environment
Finally, the existence of glue also has a negative impact on the magnetic stability of the magnetic core structure, especially at low temperature or high temperature, which greatly affects the magnetic stability of the magnetic structure and reduces the response speed of the magnetic temperature control switch.

Method used

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  • One-piece magnetic core structure, manufacturing method thereof, and magnetic core assembly
  • One-piece magnetic core structure, manufacturing method thereof, and magnetic core assembly
  • One-piece magnetic core structure, manufacturing method thereof, and magnetic core assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment discloses an integrated magnetic core structure, such as figure 1 As shown, it includes a soft magnetic part 100 and a hard magnetic part 200 disposed at both ends of the soft magnetic part 100 , and a cavity 300 for placing a magnetic sensor is provided in the soft magnetic part 100 and the hard magnetic part 200 . Specifically, the soft magnetic part 100 and the hard magnetic part 200 are integrally formed, that is, the soft magnetic part 100 and the hard magnetic part 200 are integrally formed together. The assembly steps of the traditional production and assembly steps (production of soft magnets and hard magnets, magnetization of two hard magnets respectively, alignment of soft magnets and hard magnets, bonding soft magnets and hard magnets with glue) are simplified into Two steps (forming the magnetic core structure at one time and magnetizing the two hard magnetic parts at the same time) greatly improve the production efficiency of the magnetic co...

Embodiment 2

[0061] This example is basically the same as Example 1, the difference is that in this example, the formula components of the soft magnetic part are calculated by weight percentage, including soft magnetic main material 99.5%, CuO 0.4%, MoO 3 0.1%. Among them, the formula of soft magnetic main material is calculated according to mole percentage, including: Fe 2 o 3 65%; MnCO 3 28%; ZnO 7%.

[0062] In this embodiment, the formula components of the hard magnetic part are calculated by weight percentage, including 88.5% of hard magnetic main material, 0.5% of dispersant, and 11% of water. Among them, the formula components of the hard magnetic main material are calculated by weight percentage, including 70% of strontium ferrite, 15% of neodymium oxide, and 15% of alcohol camphor solution.

[0063] In this embodiment, in step A4, the mass of the binder accounts for 4.5% of the total mass of the ball abrasive and the binder.

[0064] In this embodiment, in step B2, the mass...

Embodiment 3

[0067] This example is basically the same as Example 1, the difference is that in this example, the formula components of the soft magnetic part are calculated by weight percentage, including soft magnetic main material 99.7%, CuO 0.2%, MoO 3 0.1%. Among them, the formula of soft magnetic main material is calculated according to mole percentage, including: Fe 2 o 3 68%; MnCO 3 26%; ZnO 6%.

[0068] In this embodiment, the formula components of the hard magnetic part are calculated by weight percentage, including 91.5% of hard magnetic main material, 0.1% of dispersant, and 8.4% of water. Among them, the formula components of the hard magnetic main material are calculated by weight percentage, including 75% of strontium ferrite, 12% of neodymium oxide, and 13% of alcohol camphor solution.

[0069] In this embodiment, in step A4, the mass of the binder accounts for 5% of the total mass of the ball abrasive and the binder.

[0070] In this embodiment, in step B2, the mass ...

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Abstract

The invention discloses an integral magnetic core structure and a manufacturing method thereof, and a magnetic core assembly. The integral magnetic core structure comprises a flexible magnetic part, and hard magnetic parts which are arranged at two ends of the flexible magnetic parts; empty cavities for positioning magnetic sensitive elements are arranged in the flexible magnetic part and the hard magnetic parts; the flexible magnetic part and the hard magnetic parts are integrally formed; the width of the flexible magnetic part is less than that of the hard magnetic parts, so that a concave groove for charging magnetism for the hard magnetic parts is formed in the side surface of the magnetic core structure. According to the magnetic core structure, the flexible magnetic part and the hard magnetic part are integrally formed and the magnetism charging is performed at a time to manufacture the magnetic core structure; that the hard magnets are respectively charged with magnetism and then adhered and assembled through adhesive is avoided, so that the production efficiency is greatly increased; meanwhile, the magnetic core structure is good in performances and high in stability; the magnetic conductivity remains high under a low temperature section or a high temperature section.

Description

technical field [0001] The invention relates to a magnetic core structure, a manufacturing method thereof, and a magnetic core assembly, in particular to an integrated magnetic core structure, a manufacturing method thereof, and a magnetic core assembly. Background technique [0002] In the prior art, the magnetic core structure is widely used in various fields of life, such as the low-temperature thermal compensation structure of household refrigerators, automobile temperature sensors, etc. The core components of these structures are magnetically sensitive temperature control switches with precise temperature control, and magnetic The core component of the sensitive temperature control switch is the magnetic core assembly (including the magnetic core structure and the magnetic sensitive element). [0003] The traditional magnetic core structure generally includes a soft magnet and two hard magnets arranged on both sides of the soft magnet, and the soft magnet and the hard m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F3/00H01F41/02H01H36/00
Inventor 龙克文
Owner SANQIAOHUI (FOSHAN) NEW MATERIAL CO LTD